Related Clues:

• Dashed-off message?
• Brillo competitor
• Phrase of apprehension
• Mayday letters
• Desperate characters?
• It replaced CQD
• ... --- ...
• ''Help!''
• "Whoops!"
• 'Did I just do what I think I did?!'
• Distress sig.
• Ocean's "911"
• Help-wanted sign?
• "Could be trouble!"
• ABBA song